Window-screen



J. J. GREENWALD.

WINDOW SCREEN. APPLICATION FILED AUG. 30. 1919.

Patented July 27, 1920.

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specification of Letters Patent I Patented J ly 192() Application filed August so, 1919. Serial No. 320.803.

To all whom it may concern: V r

Be it known that I, JACOB J. GREENWALD,

a citizen of Bavaria, residing at Sheboy an,

in the county of 'Sheboygmn-State of l isconsin, have invented'certain new and useful Improvements in Window-Screens; and I do hereby declare the following to be a full, clear, and exact description of the in. vention, such as will-enable others skilled in the art to which it appertains to make and use the same. p

This invention is an improvement 111 win dow screens, and has particular reference to a fly guard therefor;

The object of the .inventionis to provide an improved screen of simple and inexpensive construction made in sections adapted to be assembled edge to edge in numbers without the liability of flies and sufficient to close the sash opening, the upper section being made in sucha manner that the window maybe entirely or partially opened other in: sects entering the house, I V

The inventive idea involved is-capable of receiving a variety of. mechanical expressions, one of which'for the purpose of illustrating the inventiom-is shown in themcompanying drawing wherein 2 Figure 1 is a general perspective view of the window screen showing the same in po sition in a window frame. p f

Fig. 2 is a perspectiveview of the screen 7 sections slightly separated,

Fig. 3 is a transverse section on the line 3-3 of Fig. 1.

Referring more particularly to the drawings, F indicates the frame in which the sashes U and L are slidable in the usual manner, and G is the glass or pane of the lower sash.

The window screen which comprises the i essential feature of this invention is adapt- 1 and a pair of vertically disposed guide strips 9 secured to the plate 7 so as to be disposed at right angles thereto and in parallel relation witliandspaced from each other.- To this end'each strip 9 is formed upon its edge with a plurality. ofspaced tongues 10 which are extendedv through slots in the plate 7 and then-bent over-upon the plate to secure the strip in its proper position. 7

The screen body is slidably mounted between the guide strips 9 and said body preferably comprises the two screen sections 12 and 13 and the upperor guard sections 14, respectively. :The lower and intermediate sections 12 and 13 each preferably comprises a metallic frame :15 of U-shaped formation to which is secured the wire netting sheet The upper rail is composed of two spaced strips 17 projecting above the side bars to form, a, groove 18 for receiving the lower rail of the next. superposed frame, and suitable fasteners 19- may be passed through the strips and side bars to secure the same together. a 2 j The upper section 14: of the screen is also preferably formed. U-shaped and of metal, and when the section is inposition the side bars thereof'willengage between the guide 7 strips-91h the same manner as the side bars oftheframe 15 engag'e'fitherein: The upper section-14 isprovided with a guardlip .20 formed by cutting the materialv of the section upon vertical lines to a depth substantially equalto oneehalf of the depthof'the section. These cuts are spaced to give the lip a length equal to the distance between'the inner vertical edges of the side bars of the lower window sash L, andwhen in its proper position the lip is bent toward and into contact with the pane of glass G in the sash L so as to prevent the insects from crawling upward on the ane and past the free longi tudinal edge of the lip, and thereby gaining access to the room. The resiliency of the metal of which the lip is made may be sufficient to retain the same against the pane of glass when the window is opened and closed, but in order to aid in' maintaining such contact small springfingers 21 may be carried by the lip and project beyond its ends 'behind the guide strips 9. When the guard section 14 is lifted out these fingers slip off the guides; then the screen sections 13 and 12 may be removed to clean the glass Gr or to store the screen during the winter. But

while the parts are in place the lip of the upper section serves constantly as a fly guard, though permitting adjustment of the lower sash to any desired degree.

In the drawings I-have shown this window screen made up of'threeseetions wherei of the lowermost numbered 12 1S large,'theintermediate section numbered 13 iss naller, and the uppermost section 14. is that carrying the fiyguard; but it will be understood that the screen could be made or could be used with a larger or smaller number of sections. The uppermost section shown herein is preferably always employed so that its lip will close the space between the plane of the netting and the glass Gin the nearest sash,

and in fact this section might be used at the top of any fly screen whose upper rail did not perform this service. Of course the re mainder of the structure might be in one section, provided the size of the sash opening and the wishes of the user were known, but even then access to the lower sash when raised would not be easy. It is preferred to make the'screen in two or perhaps more sec"- tions, first because they can be assembled in quantities and sizes sufficiently to close various-size'd sash opening Second because they can be assembled in the same window to make a tall or a short screen at different times asthe userldesires, and third because 1 with'at least one smaller sectionl3 just beneath the guard section, it is an easy matter to slip out such guard and smaller section at any time in order to reach the lower rail ofthe lower sash and adjustit, and then restore the sections. lV'hen they are in place their sheets of netting stand in one plane 'and'areso m'alntalned because thelower rall of the section constitutesja tongue entering the groove which is formed by spacing the upper rail of the section: below; and this tongue-and-groove connection between the sections renders the useoflight guides possible since their only function is to hold the sections upright.

WVhat is claimed is 1. The herein described window. scree made up ofa "plurality of screen sections superposed edge to edge with their netting sheets'in a single plane, each section including a :U-shaped metallic frame having its upper rail composed of two strips secured 1130 its side bars and spaced toreceive the lower rail of the frame above, and an uppermost section having a guard'lip deflected side rails are-"slidably mounted in said guides, the sections being maintained edge to edge therein with their netting sheets in a single plane, an uppermost section'having a guard lip deflected out of said plane, and sprlnggfingers secured to the 'lip" and ex tending beyond its ends and adapted to be engaged behind said guides.

3." The herein described fly-guard structure for window screens the'same co1nnrising a framesection adapted to be mounted in the screen guides above the screen proper, a lip held at its lower edge within said'section and adapted to be deflected out of the plane of'the screen, and yielding means for holding it so deflected with its free edge in contact with the glass of the adjacent sash." In testimonywhereof, I aflix my'sig'na ture, in the presence of'two witnesses.

JAcoB' osE ncREnNwALn.

VVitnesses JOHN SQH IDBAUER, JOHN W'QAMA N. 

